Geoege dysolsr owen



(No Model.) 7

G. D. OWEN & R. DYSON.

MANUFACTURE OF WHEELS.

Patented Jan. 13, 1885.

Wmesses I IAKBHJEO rs v ,2 fifM- I UN Tnn STaTns PATENT Oriana.

GEORGE D. OWEN AND ROBERT DYSON, OF ROTHEEHAM, COUNTY OF YORK,

' ENG-LAND.

MANUFACTURE OF WHEELS.

SPECIFICATION forming part of Letters Patent No. 3103416, dated January 18, 1885.

Application filed May 22, 1882. (No model.) Patented in England February 15, 1879, No. 608, and in France May 27, 1879,

To aZZ whom it may concern.-

Be it known that we, GEORGE DYSON OWEN and ROBERT DYSON, both citizens of England, residing at Rotherham, in the county of York,

5 England, have invented a new and useful Irn' provement in the Manufacture of Iron or Steel Wheels for Railway and other Rolling Stock, (for which we have obtained a patent in Great Britain, No. 608, bearing date February 15,

[ 1879, and in France, No. 130,892, dated May 27, 1879,) of which the following is a specification.

The object'of ourinvention is to produce in iron or steel wheels.such as are used for rail- 1 way and other rolling stock-a strong wroughtiron or steel nave or hub firmly securing the ends of the iron or steel spokes. To will describe how we effect this, referring to the ac companying drawings.

Figure 1 is a vertical section of the dies used, with a partly-formed wheel in its place to receive its nave, and Fig. 2 is a plan of the said partly-formed wheel and lower die. Fig.

. 8 is a vertical section of the dies and wheel with its nave formed, and Fig. 4 is a corresponding plan. The partly-formed wheel has its spokes A held in position by a ring, 13, these spokes being made either of bent bars, as shown in Figs. 2 and 4, or in any other 0 form, having their free ends approaching each other near the center of the wheel. The length of the spoke is such that its inner end will when the nave or hub is finished terminate or be embedded in the hub. This is im- 5 portant, as the union between the hub or nave and spokes is due to the shrinking of the metal of the hub upon the spokes, and not to a Weld.

It is of advantage to form nicks a near the 4.- extremities of these free ends, so as to give a better hold in the nave. The wheel so far formed, with its spokes, is placed on the bed 0 of a hydraulic or other powerful press, in which is fixed a lower die, D. Above the 5 wheel is mounted an upper die, E, and the press is arranged so that the upper die, E, is made to descend, and then a plunger, F, is

made to ascend; or the upper die, E, might be stationary while the lower die, D, and the plunger F both are made to ascend, the plun- 5o ger F being, however, caused to ascend through a greater distance. A cylindrical piece, G, of iron or steel containing suflicient material to form the nave, being heated to a high temperature-such as welding -heatis placed 5 5 within the spokes, as shown in Figs. 1 and 2, and then the dies D and E are broughttogether and the plunger F ascends, so as to squeeze and mold the piece G to the form of the nave, as shown in Figs. 3 and 4:, the squeezed metal embracing the ends of the spokes and shrinking firmly on them as it cools. A welding-heat is not essential, as any heat which will permit of the transforming and reshaping of the piece G by the plunger 6 5 F and dies D E will suffiee.

lVe are aware that heretofore in the manufacture of this class of wheels the spokes have been bent so as to project outside of the hub, and after having been raised to a weldingheat have been united to the hub or nave by means of dies, which partially shaped the hub and welded the same to the spokes, and do not herein claim the same, for the reasons, first, by such construction the ends of the spokes project to the outside of the hub; secondly, the spokes being heated to a weldingheat shrink equally with the hub in cooling, and consequently are not properly grasped by the hub; and, thirdly, the method depends for its effieiency upon the welding of the hub and spokes together, which cannot be eft'ectively accomplished where the metal is forced from the center outward around, over, and between the spokes, whereas by our method the ends of the spokes, being far below the temperature of the metal in the hub, do not shrink in proportion to the shrinkage of the hub, and therefore are grasped and firmly held by the hub when cool.

Having thus described the nature of our invention and the best manner we know of carrying it out in practice, we claim The method herein described for forming wheels having metal hubs and metal spokes, of two subscribing witnesses, this 25th day of which consists in shaping, compressing, and April, 1882. shrinking the hub upon the ends of the spokes GEORGE DYSON OWEN While the metal of the hub exceeds in term perature that of the spokes, substantially as ROBERT DYSON' and for the purpose specified. Witnesses:

In testimony whereof we have hereunto set ARTHUR MAT'IISON,

our hands to this specification, in the presence HENRY GIBBs. 

